Improved sewek-pipe machine



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i iVlLl-JIAM K.. BLACK, 0F PHlLADELlHA, PENNSYLVANIA.

Letters Patent No. 67,099, (ntedJ'uy 23, 1867.

IMPRovsD sewer-ries MACHINE.

dige Stimuli ruimt 'in `ufttisrettms @anni mit mating putt nf 'tigri sume,

TO ALL WHOM IT MAY CONGERN:

Be it known that I, WILLInM K. BLACK, of the `city and county of Philadelphia, andstate of Pennsylvania,

have invented a new and useful Improvement in.A Machines for Making ,Sewer Pipes; and I do hereby declare v thefollowing to be a full, clear, and exact description of'thc nature thereof, sui'licient kto enable others skilled in the art to which it appertains to fully understand and use the same, reference being had to the accompanying ldrawings,'makin'g part of this specification, in which n y i Figure 1 is a front view of the device illustrating` my invention, having the ydoor of the cylinder opened, showing thcrinternalv parts of the cylinder.

` Figure 2 is' alongitndinal vertical section of the die taken through its middle.

Similar letters of reference indicate corresponding parte in the two figures.

This invention relates-.tothat class of machines designed for manufacturing sewer pipes from clay or cement; and it consists, first, in suspending the knife andscrew-sbaft within the cylinder, whrehy less power is required in pressing or forcing the clay through the die, and space is gained in the cylinder; secondly, in a removable funnel containing a suspended core-pin,4 whereby the die can be changed and others be substituted; thirdly, in constructing the portion of the shaft carrying the knives of wrought iron, and the screw or spiral flange and corresponding portion of the shaft of cast iron, so that the clay can he forced through the die, andl the shaft be suiiiciently strong to withstand the resistance offered by the clay during cutting and tempering;

fourthly, in attaching a `door to thc cylinder by dividing'sthe cylinder in two sections and hinging. one tothe other, which, when closedrforms-a complete cylinder, and when opened admits of access to the die andthe removal of stones and other obstructions which may lodge iu the dies or within the cylinder.

a, In the drawings, vA represents a horizontal frame, from which rise uprights A connected by crosspieces abe. Tothe upper cross-piece e is secured lugs d, in which is mounted a horizontal shaft, c, carrying at one end a bevel-wheel, f,which meshes with a corresponding wheel, g, secured at the upper end of a vertical shaft, B. This shaftB is thus suspended from the wheel g, and hasguide bearings in lugs or boxes, In', secured to the cross-pieces b c respectively, and is constructed of wrought iron, having its lower end contracted, and provided with a. screw-thread, k, into which ts a screw-socket on the upper part of the shaiftlliA to which the screw or spiral ange D is scoured. This shaft and Harige are made of cast iron. It has-been found that the great strain ou cast-iron shafts, caused bythe resistance 'of the shaft, will break or snap them, so that they must b e replaced by new ones, and this is a common and expensive occurrence, and as the parts cannot' he'welded theyL areonly useful as old iron. The. shaft is again' greatly weakened by the holes or openings `rnide'therein to receive the` y knives. I have endeavored tovobviate this by constructing the p ortion of th'e shaft 'where suclrstrain will be `of wrought iron, and unitin'g'it with the ordinary cast-iron spiral flange or screw hy means of a socket and screwvfjoint or equivalents. This has proved from experience yto.bepriwticaland useful, and wilicertainly remedy the evil spoken oth,l Eis the cylinder, having on its upper end a ilaring inouthor hopper, l. I cut the cylinder in two equal vertical sections, F F. One portion, F', rests firmly yon Athe crosspiece `a., and the other lportion is provided with hinges, m, whereby it will swing'freely and admit of being opened and closed. Suitable 'hasps and staples are secured to the sectionsso that they will not open automatically. l The bottom of the cylinder n. has a. circular opening, in which fits a ring, G, receiving in an openingin its centre the bottom of a funnel, H,

which is readily removable. `A longitudinal partition, o, is secured atv the upper part ofthe funnel, from the lower side of the middle of which is 'suspended a corepin, I, of conical form, whose bottom is flush with' the funnel. I l i It will bel seen that the die, consisting of the funnel and core-pin', rests frmlyin position, but can bc easily removed, and another one of a diiiarcnt sigerhe substituted. The Vring G can be made to have its central open-- ings of various sizes, to correspond with the sizeof the hottolnofthe funnel. AIt; will be only necessary to open the door o'r section F of the cylinder, and ready access is then' had to the die, The suspended shaft leaves :a spacevbctwecn its lower end andthe top of the die, and by the simplel arrangement of the die the clay is forcedout almost uninterruptedly and without nloss of power. If stones should find a-lodg-ment inth'e die,` flange, or

cylinder, and it he desired to remove them therefrom, ready access cau he had thereto by merely opening the cylinder and digging ont the obstruction, and on closing the sumo the machine cnn again be putin operation.

The shaft B is provided with the Aordinary knives p,fwhich cut and temper the clay, and the flanges spirals force theclay through the die, forming s.' pipe at the bottom of the cylinder as the clay passes through the die.

The great disadvantnge in the ordinary rising and falling nnges isthe time required to retorn them totheir highest pointsbefo're srfresh supply of clay can' be introduced into the cylinders. As the dies are tobe removed often, it is evident that they should be clear of' any connection with other parts of-thelmachine'. sUSpeI'ided` shaft only, having no bearing on the bottom of the cylinder, can be practically `used for this purpose. IThe door must 'open entirely, fromtop'to bottom of' the cylinder, so that access can bc had Ito any parts thereof, aswell :is to the die, which could not be'removed if a. mere-hole oTopening were made in the cylinder,'or ifthe screw'- shcft rested on the die.

`Havi`ng thus described my'inventiom'vhat' claim as new, and desireftcfseux'e by Letters Patent, isi-Y- 1. The revolving screw-shaft B C D, suspended from its'benrings,"whenVlenvingn space between it and the bottom of the cylinder, as and for the. purpose specified. i

2. The construction ot'- the shaft B of wrought iron, and the spiral lunge Dancl shaft C of cast iron, forming the cutting, tempering, andforcing partsf C D, 4substantially as described for. thepurpose specified.

3.' The suspendedy core-pin I, in combination with `the funnel H, substantially as described for the purpose specified. A 4 v 4.. `The removable-ring Gr supporting the removable die H I, substantially as described.

5. In combination with the revolving screw, the door F of the sectional cylinder, extending from top te bottom thereof, for the purpose described and in the manner specitied.

To the above I have signed my name this sixteenth day of April, 1867.

' WM. K. BLACK.

Witnesses lS.'.A. HARRISON, E.. A. LYNCH. 

